Licensing & Attribution

for Students/Teachers/Authors/Collaborators:
Basic license

By exercising the Licensed Rights (defined below), You accept and agree to be bound by the terms and conditions of this Attribution-NonCommercial-NoDerivatives 4.0 International Public License (“Public License”). To the extent this Public License may be interpreted as a contract, You are granted the Licensed Rights in consideration of Your acceptance of these terms and conditions, and the Licensor grants You such rights in consideration of benefits the Licensor receives from making the Licensed Material available under these terms and conditions.

You are free to:

Share — copy and redistribute the material in any medium or format.

The licensor cannot revoke these freedoms as long as you follow the license terms.

Under the following terms:

Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
NonCommercial — You may not use the material for commercial purposes. Interpretation at the bottom of the page.
NoDerivatives — If you remix, transform, or build upon the material, you may not distribute the modified material.
No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

Frequently Asked Questions about Creative Commons license here.

This is a human-readable summary of (and not a substitute for) the license.

According to the terms of the license, minor spelling or typo changes usually do not count as revisions or adaptations, according to the CC BY license.

Suggested Attribution

See also the Creative Commons FAQ on attribution, and also best practices for attribution.

Redistributing the book verbatim:

This [NAME OF THE BOOK] material is created by the Books4Languages Team; it is edited by Antonio D., and produced with support from the Books4Languages Community. The original is freely available under the terms of the CC BY-NC-ND 4.0 license at

Extended Licenses

The content is licensed under Attribution-NonCommercial-NoDerivatives 4.0 Internacional (CC BY-NC-ND 4.0) as a Basic license.

If you would like to reuse, adapt, remix or redistribute the content, a specific license is required (Get involved):

  • for extended rights Authors/Collaborators (Registered users who have received prior authorization), the selected content will be licensed under Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) as an Extended license.
  • for commercial use (Registered users who have received prior authorization), the selected content will be licensed under Attribution 4.0 International (CC BY 4.0) as an Editorial License.

Frequently asked IP (Intellectual Property) and legal questions

If you require a specific license, go here.



The Books4Languages is a collaborative projects, with people from all over the world bringing their skills and interests to join in the compilation and dissemination of knowledge to everyone, everywhere.